Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Electronic On-line Article (HTML)
· Table of Contents
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Correlations of twin kHz QPOs and spins of the neutron stars in LMXBs
Authors:
Zhang, C. M.
Affiliation:
National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
Publication:
A DECADE OF ACCRETING MILLISECOND X-RAY PULSARS. AIP Conference Proceedings, Volume 1068, pp. 174-177 (2008). (AIPC Homepage)
Publication Date:
10/2008
Origin:
AIP
PACS Keywords:
Neutron stars, Pulsars, Distances, redshifts, radial velocities; spatial distribution of galaxies
DOI:
10.1063/1.3031188
Bibliographic Code:
2008AIPC.1068..174Z

Abstract

The correlations between the twin kHz QPOs, as well as their relations to neutron star spins, are summarized. For most sources power law correlations between the frequencies of the twin kHz QPOs are preferred. It is difficult to reconcile a spin frequency with the kHz QPO frequency difference. The kHz QPO frequencies of two accreting millisecond pulsars, SAX J1808.4-3658 and XTE J1807-294, are generally lower than those of other sources, and there exists a 1.5 times shift factor in frequency if we plot the kHz QPO data points of both pulsars to agree with the tendencies of the other sources. Furthermore, the kHz QPO model by Stella and Vietri needs to assume the stellar mass to be 3 solar mass to reconcile their model with the data of SAX J1808.4-3658 and XTE J1807-294.
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)
   

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints